Gas. For hydrogen to become a liquid, you need to cool it down to 20.28 K, which is -252.87 degrees Celcius, or -434.45 degrees Fahrenheit if that is more your style. 6 people found this useful.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  voice, sound, vocalize, vocalise(verb) utter with vibrating vocal chords. 2  vocalize, vocalise(verb) sing (each note a scale or in a melody) with the same vowel. 3  vocalize, vocalise, vowelize, vowelise(verb) pronounce as a vowel.
What Is Voice? Voice is the sound made by vibration of the vocal cords caused by air passing out through the larynx bringing the cords closer together. Your voice is an extremely valuable resource and is the most commonly used form of communication. Our voice is invaluable for both our social interaction as well as for most peoples occupation.